[Libav-user] 回复: (no subject)

sea 2509044372 at qq.com
Wed Dec 21 18:32:20 EET 2016

Thank you very much.  I download a   .mov file from http://www.hd-trailers.net/movie/rogue-one-a-star-wars-story/, but get the same result,  avcodec_open2 returns -1.

Function  av_dump_format gives .mov file information as :
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '1.mov':
    major_brand     : qt
    minor_version   : 537199360
    compatible_brands: qt
    creation_time   : 2016-12-15 23:51:52
    timecode        : 01:00:49:17
  Duration: 00:00:43.00, start: 0.000000, bitrate: 1080 kb/s
    Stream #0:0(eng): Video: h264 (Main) (avc1 / 0x31637661), yuv420p(tv, bt709), 848x360, 997 kb/s, 23.98 fps, 23.98 tbr, 24k tbn, 48k tbc (default)
      creation_time   : 2016-12-15 23:51:52
      handler_name    : Apple Video Media Handler
      encoder         : H.264
    Stream #0:1(eng): Data: none (tmcd / 0x64636D74), 0 kb/s (default)
      creation_time   : 2016-12-15 23:51:52
      handler_name    : Time Code Media Handler
      timecode        : 01:00:49:17
    Stream #0:2(eng): Audio: aac (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 76 kb/s (default)
      creation_time   : 2016-12-15 23:51:52
      handler_name    : Apple Sound Media Handler

I tried the stream address  rtmp://live.hkstv.hk.lxdns.com/live/hks,  the video stream has the type of h264.  avcodec_open2 returns -1.
av_dump_format print as:
Input #0, flv, from 'rtmp://live.hkstv.hk.lxdns.com/live/hks':
    author          : PowerSmart
    copyright       :
    description     :
    datarate        : 500
    livetime        : 1470020146
    timeshift       : 0
  Duration: 01:00:00.00, start: 0.000000, bitrate: N/A
    Stream #0:0: Video: h264 (Constrained Baseline), yuv420p, 640x480, 15.17 fps, 15 tbr, 1k tbn, 30 tbc
    Stream #0:1: Audio: aac, 32000 Hz, stereo, fltp

------------------ 原始邮件 ------------------
发件人: "Blake Senftner";<bsenftner at earthlink.net>;
发送时间: 2016年12月21日(星期三) 晚上11:46
收件人: "This list is about using libavcodec, libavformat, libavutil,libavdevice and libavfilter."<libav-user at ffmpeg.org>; 

主题: Re: [Libav-user] (no subject)

Is the h264 file you are using available online to test against? 

I have been using the h264 film trailers from here http://www.hd-trailers.net/movie/rogue-one-a-star-wars-story/

And they open and play without issue. Do you get the same issue with your software using one of these clips? 

You may need to post your function that opens a stream up to the point where you call avcodec_open2()...

-Blake Senftner
Computer Stuff

On Dec 21, 2016, at 7:24 AM, sea <2509044372 at qq.com> wrote:

In transcoding project of LeiXiaoHua(demo of usage of filters), if I use media file with h264 video stream as input file, the function  avcodec_open2 will return -1.  Media file with video stream in other format, such as mpeg4, mjpeg return 0 (OK). Why ? Someone meets the same problem?
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